If you are having trouble using WhatsApp today, you could be one of thousands.
In a major change, WhatsApp has stopped supporting 43 mobile phones on its platform starting today.
People with older mobile phones will be among the most affected.
Whilst updating your mobile could be the solution, it's certain that WhatsApp will not be compatible with a long list of different mobile devices.
WhatsApp technical support reads: "WhatsApp will no longer support Android phones running OS 4.0.4 and older on November 1, 2021.
"Please switch to a supported device or save your chat history before then.
"WhatsApp for iPhone requires iOS 10 or newer.
"For the best experience, we recommend you use the latest version of iOS available for your phone."
So if your mobile is not one of those listed but still isn't working, it's worth updating your phone's operating system.
Full list of devices that WhatsApp does not support from November 1
- Alcatel
- Archos 53 Platinum
- Ascend D Quad XL
- Ascend D1 Quad XL
- Ascend D2
- Ascend G740
- Ascend Mate
- Ascend P1 S
- Best L2 II
- Best L3 II
- Best L4 II
- Best L5 II
- Best L7 II
- Caterpillar Cat B15
- Galaxy Ace 2
- Galaxy Core
- Galaxy SII
- Galaxy S3 mini
- Galaxy Trend II
- Galaxy Xcover 2
- Grand Memo
- Grand X Quad V987
- HTC Desire 500
- iPhone SE (2016 edition)
- iPhone 6S
- iPhone 6S Plus
- Lenovo A820
- Lucid 2
- Optimus F3
- Optimus F3Q
- Optimus F5
- Optimus F6, Enact
- Optimus F7
- Optimus L3 II Dual
- Optimus L4 II Dual
- Optimus L5
- Optimus L5 Dual
- Optimus L7
- Optimus L7 II Dual
- Optimus Nitro HD
- Optimus 4X HD
- Run F1
- THL W8
- UMi X2
- Wiko Cink Five
- Wiko Darknight
- Xperia Arc S
- Xperia Miro
- Xperia Neo L
- ZTE V956
